Th9 lymphocytes: A recent history from IL-9 to its potential role in rheumatic diseases

Publication date: Available online 26 February 2016
Source:Autoimmunity Reviews
Author(s): Wilmer Gerardo Rojas Zuleta, Gloria Vásquez Duque
Various subtypes of effector T cells have been described up to date, and each one with its specific immunological function and a defined cytokine secretion profile. Th9 lymphocytes, recently described, are characterized by a high IL-9 expression. Their differentiation requires the integration of IL-4 and TGF-β signaling pathways and the coordinated participation of multiple transcription factors. Their role has been mainly found in immunity against parasites and in allergic inflammatory processes. Nevertheless, they have been implicated in processes as autoimmunity, cancer and recently in rheumatic diseases. The objective of this review is to describe the discovery of this cellular subtype, its differentiation, expression regulation and its potential role in rheumatic diseases.



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